Coverity: Initialize member variables.

ui/base/dragdrop/os_exchange_data_provider_win.cc

Index: ui/base/dragdrop/os_exchange_data_provider_win.cc
diff --git a/ui/base/dragdrop/os_exchange_data_provider_win.cc b/ui/base/dragdrop/os_exchange_data_provider_win.cc
index ee91d750c076ae91a08212697e1d63177222746a..7a3d6ea87a2b3191458c97def758c32867297262 100644
--- a/ui/base/dragdrop/os_exchange_data_provider_win.cc
+++ b/ui/base/dragdrop/os_exchange_data_provider_win.cc
@@ -75,7 +75,7 @@ class FormatEtcEnumerator : public IEnumFORMATETC {
  private:
   // This can only be called from |CloneFromOther|, since it initializes the
   // contents_ from the other enumerator's contents.
-  FormatEtcEnumerator() : ref_count_(0) {
+  FormatEtcEnumerator() : cursor_(0), ref_count_(0) {
   }
 
   // Clone a new FormatEtc from another instance of this enumeration.